KR101768049B1 - Uv ink printer device - Google Patents

Abstract

The present invention relates to a UV ink printing apparatus capable of uniformly and smoothly curing a varnish applied on an ink using UV, and more particularly, to a UV ink printing apparatus which is provided with a housing having a printing section on which an object can be placed, And a head which moves in the left-right direction of the printing unit along the guide rod, wherein the head is provided with a nozzle having an ink nozzle and a varnish nozzle, so that the varnish can be applied after ink printing, And a curing unit for curing the varnish twice, thereby preventing a smooth layer from being formed on the surface of the varnish to be cured.

Description

[0001] UV INK PRINTER DEVICE [0002]

The present invention relates to a UV ink printing apparatus capable of uniformly and smoothly curing a varnish applied on an ink using UV, and more particularly, to a UV ink printing apparatus which is provided with a housing having a printing section on which an object can be placed, And a head which moves in the left-right direction of the printing unit along the guide rod, wherein the head is provided with a nozzle having an ink nozzle and a varnish nozzle, so that the varnish can be applied after ink printing, And a curing unit for curing the varnish twice, thereby preventing a smooth layer from being formed on the surface of the varnish to be cured.

In general, a method of applying a gloss liquid, that is, a solution, generally called a varnish, is applied and cured to form a three-dimensional effect and gloss on an ink print.

In this case, technologies including a hardening device for a printer, a printing apparatus, and the like are proposed so that the varnish can be applied and cured simultaneously without being subjected to a separate curing process.

Such conventional technology is disclosed in Korean Patent No. 10-1000381 entitled " Ink-jet printer and printing method "

The above-mentioned prior art discloses a UVLED unit for temporarily curing UV ink adhered to a print medium by irradiating ultraviolet rays toward a print medium supported by a support table, and a UVLED unit for irradiating the UV ink adhered to the print medium by the UVLED unit A controller that adjusts the amount of light curing the UV ink from the amount of temporarily curing the UV ink, a two-step curing mode in which the UV ink adhered to the printing medium is temporarily cured by the UVLED unit and the controller, And an ink-jet printer and a printing method provided with a control unit capable of switching a one-step curing mode for final curing by ultraviolet irradiation.

Also, there is a conventional inkjet printer using UV ink as disclosed in Japanese Patent Application Laid-Open No. 10-2006-0009021,

The prior art uses UVLED or UVLED array units for ultraviolet light emitting units of UV irradiation means for irradiating ultraviolet rays onto UV ink droplets landed on the surface of a printer medium mounted on a platen by spraying from an inkjet head to cure the ink droplets , An inkjet printer using UV inks capable of greatly suppressing the power consumption energy of the UV irradiating means or reducing the size and weight of the UV irradiating means is proposed.

Further, in the prior art, a registered trademark 10-1081711 " Ink curing device for UV label printer "

The above-mentioned prior art discloses a UV label printer which includes a curing unit movably installed in a housing of a UV label printer, the curing unit movably installed on a guide rod disposed in parallel with the conveying direction of the printing paper for a label than the head unit, The ink curing device for a UV label printer including a driving device for displacing the ink curing device.

In addition, there is a prior art No. 10-0422405 entitled " Ink-jet device having instant curing function &

The above-described prior art has a head for ejecting ink to an inkjet material to print an inkjet material, a head for transferring the inkjet material to and from the main body, and an inkjet printer including a printing apparatus for feeding the inkjet material, And an ultraviolet ray exposure apparatus which is attached to both sides to immediately cure ink that has been sprayed.

However, the above-mentioned prior arts are devices for curing ink or UV ink. When a varnish (varnish) is applied to improve the quality of printed matter, the surface is not smooth due to this curing method and process, Or the like may be generated, and problems such as the flow of varnish depending on the degree of curing may occur.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems,

And a head which is provided on the guide rod and moves along the guide rod, the ink and the varnish nozzle being provided in the guide rod, the head moving in the length direction of the printing part, The varnish is applied and hardened through a curing unit including a first curing member that is first cured on one side of the varnish and a second curing member that is separated from the first curing member and secondarily completely cured The present invention is directed to a UV ink printing apparatus.

The second curing member may be disposed behind the first curing member or at a position behind the first curing member. Alternatively, the second curing member may be spaced apart from the first curing member by a predetermined distance so that the varnish is not cured. Another object of the present invention is to provide a UV ink printing apparatus capable of giving a time for allowing the varnish to coalesce well with each other.

In order to achieve the above object, a UV ink printing apparatus according to the present invention comprises:

A housing having a printing unit on which an object to be printed is placed;

A guide rod provided on the printing unit and moving back and forth along the printing unit;

A head provided on the guide rod and moving in a lateral direction of the printing unit, the head having a plurality of ink nozzles and a varnish nozzle;

A curing unit provided on the guide rod and including a first curing member for primary curing an object through a UV lamp and a second curing member for secondary curing the primary cured object;

And a control unit.

As described above, the UV ink printing apparatus according to the present invention comprises a housing and a guide rod which is provided in the housing and moves the printing unit, moves along a guide rod and is provided with a plurality of ink nozzles and a varnish nozzle, After printing through the car ink is completed, varnish is applied to an object to be printed with ink through the varnish nozzle again, thereby improving the quality of the printed matter,

Since the housing is further provided with a curing unit composed of the first curing member and the second curing member, the varnish is applied, and at the same time, the first curing is weak (so as not to fall down), and the varnish It is possible to prevent the occurrence of defects because the surface of the varnish is smooth and the layer is not formed in the varnish.

Further, since the second curing member is provided at the rear end or the rear end of the first curing member and is spaced apart from the first curing member, there is no need to set a separate time, and a temporal term between the first curing and the second curing is naturally It is possible to give a time for allowing the varnish to be superimposed on each other to be absorbed by each other so that defects can be prevented from occurring.

1 is a perspective view of an ink printing apparatus according to the present invention;
Fig. 2 is a cross-sectional view showing a curing unit according to a first embodiment
Fig. 3 is a cross-sectional view of a second embodiment of the curing unit according to the present invention
Fig. 4 is a view showing an embodiment of varnish application according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the digits of the tens and the digits of the digits, the digits of the digits, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 and 2, a UV ink printing apparatus A according to the present invention includes a housing 10 provided with a printing unit 11 on which an object to be printed is placed, And a head 30 provided on the guide rod 20 and having a plurality of ink nozzles 31 and a varnish nozzle 33. The guide rod 20 includes a plurality of ink nozzles 31,

First, the housing 10 is provided with a printing unit 11 on which an object to be printed can be placed. The printing unit 11 is supported on the lower part of the printing unit 11, And a guide portion 131 is formed on both sides of the main body 13 so as to allow the guide rod 20 to move along the printing portion 11. [

Therefore, the guide rod 20 can be moved back and forth along the guide part 131 in the longitudinal direction of the printing part 11 by a print command.

The guide rod 20 is provided with a head 30. More specifically, the guide rod 20 is provided with a head coupling portion 21 to which the head 30 can be coupled, The head 30 provided in the head coupling portion 21 includes a plurality of ink nozzles 31 and a varnish nozzle 33. [

Generally, the ink nozzles 31 provided in the head 30 are configured to eject color inks. Generally, the color ink uses c, m, y, and k colors. (Cyan), m (magenta), y (yellow), and k (black), which are used in various printing systems including desktop publishing, and are referred to as YMCK in the printing industry.

As described above, the head 30 is further provided with a varnish nozzle 33 in addition to the color ink nozzle 31. The varnish is a transparent coating agent and prevents discoloration, scratching, .

Therefore, the ink is primarily printed on the object through the ink nozzle 31 and the varnish nozzle 33, and the varnish is sprayed according to the secondarily printed pattern. In order to supply ink, an ink supply unit 23 for storing the ink and the varnish is formed on one side of the guide rod 20, and the ink and varnish can be supplied to the nozzle by being connected to the nozzles through the connection pipe. . In addition, when the ink or varnish is exhausted by separately providing the ink supply unit 23, it is possible to supply the ink and the varnish to the ink supply unit 23 quickly without having to remove the head 30, .

The head 30 is moved along the guide rod 20 in the left and right direction of the printing unit 11. To facilitate such movement, the head 30 is connected to the head rod 20 25 and the head connecting chain 25 composed of a plurality of chains allows the head 30 to move freely.

Further, the movement of the head 30 and the guide rod 20 is performed through a separate command, which is used in a general printing apparatus A, and a detailed description thereof will be omitted.

As described above, in the case of spraying the varnish on the object to be printed, curing must be performed in order to prevent the varnish from flowing down. The UV ink printing apparatus A according to the present invention is characterized in that the varnish is applied and the varnish is hardened And a curing unit 40 as shown in Fig.

More specifically, the curing unit 40 includes a first curing member 41 for first curing the varnish and a second curing member 41 for secondarily curing the first cured varnish. 2 curing member 43 as shown in Fig.

The first curing member 41 is provided with a plurality of UV lamps 411 and the first curing member 41 is disposed on one side of the head 30 And can move in the same manner as the head 30 when the head 30 is moved. Therefore, when the varnish is sprayed through the varnish nozzle 33 provided in the head 30, the first curing member 41 provided at one side of the head 30 can cure the varnish primarily, (As the head 30 moves along the guide rod 20, the first curing member 41 is placed on the upper surface of the printing unit 11 to which the varnish has been applied after the application of the varnish, .

At this time, the UV lamp 411 of the first curing member 41 is irradiated with an output of 0.5 to 45 W at a wavelength of 395 nm. When the varnish is applied, the varnish is cured only to the extent that the varnish does not flow down. When the wavelength or power is higher than the varnish, the varnish is completely cured to form a layer. If the varnish is weaker than the varnish, There is a problem of falling.

More specifically, as shown in FIG. 4, when the varnish A2 is sprayed, the head 30 is repeatedly moved in the transverse direction of the object A1, and the guide rod 20 is moved forward At this time, the varnish (A2) applied to the object is overlapped and applied a plurality of times.

Therefore, when the wavelength and the output of the first curing member 41 are strong, the first applied varnish (optionally first, second, and third in the order of application of the varnish to be overlaid first) The varnish applied to the secondary and tertiary coatings on the varnish is not coalesced onto the surface of the varnish to be coated first, so that a layer is formed according to the number of times of superposition, and the wavelength and power of the primary curing member are weak There is a problem that the coated varnish does not harden and flows down to the periphery so that the surface is not smooth. As a result, it is preferable that the first curing member 41, which primarily hardens the varnish, is hardened so that the surface of the varnish does not flow, so that the overlapped varnishes can naturally melt and not flow down.

The UV ink printing apparatus A according to the present invention further includes a second curing member 43 for curing the varnish to be injected in two steps.

1 and 2 show a first embodiment of the second curing member 43. First, the second curing member 43 is fixed to the rear side of the first curing member 41, Respectively. The second curing member 43 cures the first cured printed matter and is composed of a plurality of UV lamps 431 like the first curing member 41, (Printing direction) of the printing medium. In this case, the first curing member 41 and the second curing member 43 are spaced apart from each other. Generally, the distance between the first curing member 41 and the second curing member 43 is 6 cm to 8 cm And the wavelength of the second curing member 43 is suitably 395 nm and is preferably stronger than the output of the first curing member.

As described above, the reason why the second curing member 43 is spaced from the first curing member 41 is that the varnish is overlaid and coated, In the case of deficiency, a problem may occur that a layer is formed between each varnish. Accordingly, the second curing member 43 is spaced from the first curing member 41 by a predetermined distance (preferably, 6 to 8 cm) so that the curing time can be secured, It is preferable that the output and the wavelength are higher than that of the first curing member 41 for curing.

3 shows a second embodiment of the second curing member 43. According to the second embodiment, the second curing member 43 is provided on the guide rod 20, Specifically, it is preferably provided at a rear end of the guide rod 20 in the printing direction, but spaced apart from the guide rod 20 by a predetermined distance. The second curing member 43 of the second embodiment also comprises a plurality of UV lamps 431. The wavelength and the output of the UV lamp 431 of the second embodiment are the same as those of the UV lamp 431 of the first embodiment And smaller than the output.

This is because the second curing member 43 of the second embodiment is not fixed to the head 30 but is fixed to the guide rod 20 unlike the second curing member 43 of the first embodiment, Thereby irradiating the lateral surface of the printed matter. That is, while the head 30 is moving in the lateral direction, the second curing member 43 is fixed at one position to irradiate the lateral surface of the object, so that the irradiation duration of the second curing member 43 Is made longer. Therefore, it is preferable to prevent the object from hardening due to excessively hardening of the printed material, which is smaller than the output and wavelength of the second curing member 43 of the first embodiment. As in the case of the first embodiment, (The head 30 having the first curing member 41) than the first curing member 41 so that the first curing member 41 is provided.

A partition wall 433 is provided at the front end of the second curing member 43 so that the varnish A2 that is first cured by the first curing member 41 is held by the second curing member 43 It is not affected by the UV of the second curing member 43 until the secondary curing is started.

More specifically, the varnish (A2) applied to the printing unit (11) by the varnish nozzle (33) overlaps and is applied, and the primary curing is proceeded by the UV irradiated by the first curing member . As described above, the primary curing and the secondary curing are performed with a time lag. This time difference is formed by forming a time for preventing the varnish A2, which is hardened by the primary curing, (The primary curing is cured only to the extent that it does not flow down, so that the overlapping varnish can be made compatible with each other, and the secondary curing is made by completely hardening the varnish completely.)

However, when the UV of the second curing member 43 is irradiated to the varnish during this time (until the varnish starts to be secondary cured), the overlapping varnish is not allowed to fuse, the boundary is formed, and the surface is not smooth .

Therefore, in order to solve this problem, a partition wall 433 is formed at the front end of the second curing member 43 to prevent the UV of the second curing member 43 from being irradiated to the varnish-coated printing area More specifically, the printing area until the applied varnish starts the secondary curing). When the printing part is positioned on the lower side of the second curing member 43 after the varnish coalesces, UV is irradiated and the secondary curing is performed By proceeding, the surface can be completely cured in a smooth state.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Changes and substitutions are to be construed as falling within the scope of protection of the present invention.

A: Printing device A1:
A2: Varnish 10: Housing
11: Printing section 13:
131: guide portion 20: guide rod
21: head coupling portion 23: ink supply portion
25: Head connecting chain 30: Head
31: ink nozzle 33: varnish nozzle
40: a curing unit 41: a first curing member
411: UV lamp 43: second curing member
431: UV lamp 433:

Claims (4)

A housing (10) having a printing unit (11) on which an object to be printed is placed;
A guide rod 20 provided above the printing unit 11 and moving back and forth along the printing unit 11;
A head 30 provided in the guide rod 20 and moving in the left and right direction of the printing unit 11 and having a plurality of ink nozzles 31 and a varnish nozzle 33;
A first curing member 41 provided in the guide rod 20 for first curing the object through the UV lamp 411 and a second curing member 43 for secondarily curing the primary cured object, A curing unit comprising:
, ≪ / RTI >
The first curing member 41 is provided on one side of the head 30,
The second curing member 43 is provided on the guide rod 20 and is located behind the head 30,
A partition wall 433 is provided at the front end of the second curing member 43
The varnish primarily cured by the first curing member 41 is prevented from being affected by the UV irradiated from the second curing member 43 until the secondary curing is started,

The wavelength and the output of the second curing member 43 are set so that the wavelength of the first curing member 41 and the wavelength of the first curing member 43 are different from each other. And the first curing member 41 is semi-cured such that the overlapping varnishes can be blended so that the boundary is formed and the surface is not smooth, and the second curing member 43 is semi-cured, Lt; / RTI >
The guide rod 20 is provided at one side thereof with an ink supply unit 23 for supplying the ink and the varnish to supply ink and varnish to the nozzle through the connection pipe,
Wherein the UV lamp (411) of the first curing member (41) has a wavelength of 395 nm and is irradiated with an output of 0.5 to 45 W to semi-cure the varnish.
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